Human Cystatin S ELISA Kit (Colorimetric)

ELISA: Human Cystatin S ELISA Kit (Colorimetric) [NBP3-18714] - Standard Reference Curve

• Reactivity: Hu
• Applications: ELISA
• Suitable Sample Type: Cell Culture, Saliva
• Standard Curve Range: 15.625 - 1000 pg/mL (example only; lot dependent)
• Sensitivity: 7.2 pg/mL (example only; lot dependent)

Human Cystatin S ELISA Kit (Colorimetric) Summary

• Description: This assay employs a quantitative enzyme immunoassay technique that measures the specified antigen in samples.
• Standard Curve Range: 15.625 - 1000 pg/mL (example only; lot dependent)
• Sensitivity: 7.2 pg/mL (example only; lot dependent)
• Assay Type: Sandwich ELISA
• Inter-Assay: CV%< 10.7 (example only; lot dependent)
• Intra-Assay: CV%< 5.6 (example only; lot dependent)
• Spike Recovery: 100% (example only; lot dependent)
• Kit Type: ELISA Kit (Colorimetric)
• Gene: CST4

Applications/Dilutions

• Dilutions:
  • ELISA
  • Sandwich ELISA

Packaging, Storage & Formulations

• Storage: Storage of components varies. See protocol for specific instructions.

Alternate Names for Human Cystatin S ELISA Kit (Colorimetric)

• CST4
• cystatin 4
• Cystatin S
• Cystatin-4
• cystatin-S
• cystatin-SA-III
• MGC71923
• Salivary acidic protein 1

Background

The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins and the kininogens. The type 2 cystatin proteins are a class of cysteine proteinase inhibitors found in a variety of human fluids and secretions. The cystatin locus on chromosome 20 contains the majority of the type 2 cystatin genes and pseudogenes. This gene is located in the cystatin locus and encodes a type 2 salivary cysteine peptidase inhibitor. The protein is an S-type cystatin, based on its high level of expression in saliva, tears and seminal plasma. The specific role in these fluids is unclear but antibacterial and antiviral activity is present, consistent with a protective function. [provided by RefSeq]

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. ELISA Kits are guaranteed for 6 months from date of receipt.

FAQs for Cystatin S ELISA Kit (NBP3-18714). (Showing 1 - 1 of 1 FAQ).

1. What is the difference between the Quantikine and Duoset ELISA kits?
   • Our Quantikine kits are fully optimized and validated for the sample types listed on the product specific webpage and datasheet, as this can vary between kits. Each kit is supplied ready to use with one pre-coated 96-well plate, a detection antibody directly conjugated to HRP, and all other necessary reagents. These kits are ideal for researchers who want the convenience of a ready to use and optimized ELISA product. Some of these kits are also available prepackaged in larger 6 and 50 plate sizes.Our DuoSet Kits, in contrast, are ELISA development kits containing the capture and detection antibody, the mass-value calibrated standard, and streptavidin-HRP to prepare approximately 5 or 15 plates. Ancillary reagents will need to be used/purchased, and for most kits, we will recommend one of our Ancillary Reagent Kits, which contain the reagents we use ourselves in-house. DuoSet kits are validated only for cell culture supernatant samples and therefore require further development and validation for accurate measurement in more complex samples such as serum and plasma. Our DuoSet Kits offer an economical, flexible alternative for the experienced ELISA user.

Bioinformatics

• Gene Symbol: CST4